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In algebra, the Milnor–Moore theorem, introduced in , states: given a connected graded cocommutative Hopf algebra ''A'' over a field of characteristic zero with , the natural Hopf algebra homomorphism : from the universal enveloping algebra of the "graded" Lie algebra of primitive elements of ''A'' to ''A'' is an isomorphism. (The universal enveloping algebra of a graded Lie algebra ''L'' is the quotient of the tensor algebra of ''L'' by the two-sided ideal generated by elements ''xy'' - (-1)|''x''||''y''|(''y'' ).) == References == *(Lecture 3 ) of Hopf algebras by Spencer Bloch *J. May, "(Some remarks on the structure of Hopf algebras )" *J.W. Milnor, J.C. Moore, "On the structure of Hopf algebras" Ann. of Math. (2), 81 : 2 (1965) pp. 211–264 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Milnor–Moore theorem」の詳細全文を読む スポンサード リンク
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